Installation Instructions
All-Fuel Chimney System
5” to 8” diameter
DuraTech
A MAJOR CAUSE OF VENT RELATED FIRES IS FAILURE
TO MAINTAIN REQUIRED CLEARANCES (AIR SPACES) TO
COMBUSTIBLE MATERIALS. IT IS OF THE UTMOST IMPORTANCE
THAT DOUBLE WALL DURATECH BE INSTALLED ONLY IN
ACCORDANCE WITH THESE INSTRUCTIONS.
NOTE:
Read through all of these instructions before
beginning your installation. Failure to install
as described in this instruction will void the
manufacturer’s warranty, and may have an
effect on your homeowner’s insurance and
UL listing status. Keep these instructions for
future reference. This booklet also contains
instructions for installing a venting system
within an existing masonry chimney, and
for installations passing through a cathedral
ceiling.
Dear Customer, Installer, or End User:
We welcome any comments regarding matters
pertaining to our DuraVent products.
We welcome any ideas, input or complaints
and I’ll make sure that someone responds
directly back to you.
Send your emails to:
president@duravent.com
If you are searching for tech support or product
information, please phone us at 800-835-4429.
Or email us at:
techsupport@duravent.com
LISTED
MH7399
ALLFUEL CHIMNEY SYSTEM, 5” TO 8” DIAMETER
For the most up-to-date installation instructions, see www.duravent.com
CONTENTS
CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
PERMITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
DURATECH CHIMNEY APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
EQUIPMENT & MATERIALS.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INSTALLATION NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
CHIMNEY DIAMETER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CHIMNEY HEIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CHIMNEY PLACEMENT. . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CHIMNEY ENCLOSURE REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
STOVE RECOMMENDATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
STEP-BY-STEP DIRECTIONS . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 6
CEILING SUPPORTED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
OFFSET ELBOW INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
EXTENDED ROOF BRACKET INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . .13
ROOF SUPPORTED INSTALLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
TEE-SUPPORTED INSTALLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
MASONRY FIREPLACE INSTALLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
ZERO-CLEARANCE FIREPLACE INSTALLATIONS . . . . . . . . . . . . . . . . . . . 22
CONNECTION FROM APPLIANCE TO CHIMNEY SYSTEM . . . . . . . . . . . . . 22
CHIMNEY MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
DuraTech
3
CLEARANCES
Always allow at least a 2-inch clearance
between DuraTech Chimney Pipe and any
combustible materials. Never ll any required
clearance space with insulation or any other
materials. Combustible materials include
lumber, plywood, sheetrock, plaster and lath,
furniture, curtains, electrical wiring and building
insulation. Keep single wall stovepipe at least
18 inches away from combustible materials,
unless a clearance reduction system that is
acceptable to the authority having jurisdiction
is used, or the appliance to be installed is
listed and the instructions specify a different
clearance.
PERMITS
Contact your local Building Ofcial or Fire
Ofcial regarding permits, restrictions, and
installation inspections in your area.
DURATECH CHIMNEY
APPLICATIONS
DuraTech Chimney is a complete chimney
system tested and listed to UL 103 HT for the
United States, and ULC S604 in Canada. In
the U.S., DuraTech Chimney can be used with
wood stoves, replaces, reboxes, furnaces,
boilers, water heaters, stoves, ranges, or
other residential-type appliances fueled by oil,
gas, coal, or wood, that require a UL103 HT
chimney system. In Canada, DuraTech can
be used with oil & gas red appliances listed
for use with a Type A Chimney, in accordance
with ULC S604 . DuraTech is also listed for use
in Canada with some factory-built replaces;
check with your replace manufacturer.
Otherwise, DuraTech has not been approved
for use with solid fuel appliances in Canada.
DuraTech Chimney is available in 5”, 6”, 7” &
8” diameters (UL 103 HT Rated), as well as
10”, 12”, 14” & 16” diameters (UL 103 Rated).
Do not use with forced draft, positive-pressure
appliances. The DuraTech Chimney system
may have a maximum of two (2) offsets (four
elbows total) of 30° from vertical. DuraTech
Chimney is listed under UL Re-examination
Service Number MH7399.
EQUIPMENT & MATERIALS
Hammer Drill
Caulking Gun Plumb Bob
Screwdrivers Tin Snips
(Phillips & Standard)
Saber or Keyhole Saw Level
Dependable Ladder Tape Measure
Proper Gloves and Shoes Eye Protection
Materials You May Need:
500ºF RTV Silicone Sealant
8 Penny Nails
#8, 2-1/2” & 1-1/2” Wood Screws
Roong Nails
INSTALLATION NOTES
Proper planning for your DuraTech Chimney
installation will result in greater safety,
efciency, and convenience, as well as
saving time and money. You must use
only authorized DuraTech Chimney parts
to maintain a listed Chimney system (not
including the connector pipe). Do not mix
parts or try to match with other products,
or use improvised solutions. Do not install
damaged or modied parts. Table 1 lists the
authorized DuraTech Chimney components.
Practice good workmanship. Sloppy work
could jeopardize your chimney’s safety. Keep
electrical wiring and insulation away from all
chimneys and stovepipes. If you have any
questions, be sure to contact either your dealer
or DuraVent directly.
4
DuraTech Chimney Components
6”, 12”, 18”, 24”, 36”, 48” pipe
sections
Elbow with swivel Attic Insulation Shield
Tee with Tee Cap Elbow Strap
Adjustable Tee Support Bracket Adjustable Wall Strap
Chimney Cap Anchor Plate
Round Ceiling Support Box Extended Roof Bracket
Trim collars for Round
Support Boxes
Square Ceiling Support Box Chase Top Flashing
Flat Ceiling Support Box Flat Roof Flashing
Roof Support Storm Collar
Trim collar for Roof Support
Wall Thimble Base Tee and Double
Finishing Collar Firestop
Reduced Clearance
Support Box
Firestop Radiation
Shield
Adjustable Roof
Flashing
Transistion Anchor Plate
Base Tee
CAS Ceiling Support
Table 1
CHIMNEY DIAMETER
Follow the appliance manufacturer’s
instructions to determine chimney diameter
and clearances between combustible materials
and your heating appliance. Never choose
a chimney with an inside diameter smaller
than your appliance’s outlet. To calculate the
chimney’s outside diameter, add 2 inches to
the inside diameter.
3 FT MIN
ABOVE
ROOF
ATTIC
SPACE
OCCUPIED
SECOND
FLOOR
2 FT MIN ABOVE HIGHEST
POINT OF ROOF WITHIN
10 FT
10 FT
Figure 1
ATTIC
INSULATION
SHIELD
FIRESTOP
RADIATION
SHIELD
(INSIDE)
ENCLOSURE
MUST HAVE 2
INCHES OF
CLEARANCE
BETWEEN
CHIMNEY AND
WALL
CHIMNEY HEIGHT
The National Fire Protection Association
Standard #211 states: “Chimneys shall extend
at least three feet above the highest point
where it passes through the roof of a building,
and at least two feet higher than any portion
of a building within ten feet.” (Fig 1) DuraTech
Chimney may be installed up to 60 feet high. If
the chimney extends more than 5 feet above
FIRST
FLOOR
SUPPORT
BOX
Figure 2
the roof, an Extended Roof Bracket must be
used (see page 12). Due to the overlap of the
joints, subtract 1-1/4 inches from each Chimney
Section’s height to calculate installed height.
5
CHIMNEY PLACEMENT
When deciding the location of your chimney,
try to avoid modications to roof beams and
other structural components of the building.
CHIMNEY ENCLOSURE REQUIREMENTS
Through Rooms: Interior chimneys shall be
enclosed where they extend through closets,
storage areas, occupied spaces, or anyplace
where the surface of the chimney could be
contacted by persons or combustible materials.
Maintain at least a 2-inch air space between
the outer wall of the chimney and the enclosure
(Fig 2).
Multi-Story: Consult local building codes for
requirements in your area. In the U.S., the
National Fire Protection Association Standard
#211 states: “Factory-built chimneys that
pass through oors of buildings requiring the
protection of vertical openings shall be enclosed
with approved walls having a re resistance
rating of not less than one hour when such
chimneys are located in a building less than
4 stories in height, and not less than 2 hours
when such chimneys are located in a building
more than 4 stories in height.” In Canada,
except in single-family and two-family dwellings,
chimneys which extend through another story
must have an enclosure with a re resistance
rating equal to or greater than that of the oor or
roof assembly through which they pass.
Cold Climates: In cold climates, chimneys
mounted on an outside wall should be
enclosed in a chase. Exterior chases reduce
condensation and creosote formation, and
enhance draft. Include an access door by the
Tee Cap for chimney cleaning (Refer to Fig 23).
6
STOVE RECOMMENDATIONS
Follow the stove manufacturer’s instructions.
The requirements stated below pertain to
all stoves or other appliances installed with
DuraTech Chimney systems.
Choice: Choose an appliance that is listed by
a recognized testing laboratory, is appropriate
for your needs, and is not larger than required.
Installation: Once the chimney system is in
place, install the stovepipe to connect the
appliance to the chimney as described in the
appliance manufacturer’s instructions. Be sure
to maintain all required clearances.
Flues: Connect only one solid fuel appliance
per chimney.
Operation: Follow the appliance
manufacturer’s instructions for maximum
efciency and safety. Overring can damage
the appliance, stovepipe and chimney.
Fuels: Do not burn driftwood, plastic, or
chemically treated wood such as railroad
ties. They are corrosive to your appliance,
stovepipe and chimney. Follow the appliance
manufacturer’s instructions and safety manual
in regards to fuels. Not all appliances are
equipped to burn coal. Coal with a low sulfur
content will reduce the possibility of corrosion.
Mobile Homes: Please read the appliance
manufacturer’s instructions and safety manual
carefully. Not all appliances are listed for use
in mobile homes.
STEP-BY-STEP DIRECTIONS
There are ve general types of DuraTech
Chimney installations:
1.Ceiling-supported
2.Roof-supported
3.Tee-supported (through-the-wall)
4.Masonry Fireplace
5.Zero-Clearance Fireplace
Review the step-by-step directions before
beginning your installation.
CEILING SUPPORTED
1. Place Appliance: Position the appliance
according to the manufacturer’s instructions.
The ue outlet collar should be placed
between the rafters or joists above, if possible.
2. Frame Support Opening: Drop a plumb
bob to the center of the appliance’s ue outlet
and mark this center point on the ceiling. Refer
to Table 2 for specic framing and clearance
dimensions. Mark appropriate cutting lines
around the center point. Cut a square hole in
the ceiling for the Support Box. Frame a level,
square opening centered over the hole which
you have cut. (Figures 3 and 4).
3. Install Support Box: For installation into
a at ceiling, there is the option of the Round
Support Box, the Flat Ceiling Support Box,
the Square Ceiling Support Box , Reduced
Clearance Support Box , or the CAS Ceiling
Support. The CAS Ceiling Support is only
used when installing the CAS system. Refer
to the DuraTech CAS Installation Instructions
for directions on how to install the remainder
of the Combustion Air System.. The Flat
Ceiling Support Box is primarily used for
Oil Appliances and comes unpainted. For
the Square Ceiling Support Box, Reduced
Clearance Support Box, and the CAS Ceiling
MINIMUM OF 3
INCHES BELOW
FINISHED CEILING
18 INCHES
MINIMUM FOR
SINGLE WALL
STOVEPIPE
ROUND SUPPORT
BOX
JOISTS & FRAMING
3 INCH MIN REQUIRED
BELOW FINISHED CEILING
CHIMNEY CAP
Figure 3
STORM
COLLAR
ROUND SUPPORT BOX WITH
SQUARE TRIM COLLAR
ADJUSTABLE FLASHING
CHIMNEY SECTIONS
ATTIC INSULATION SHIELD
FRAMED OPENING
ROUND TRIM COLLAR
3 INCH MIN BELOW
FINISHED CEILING
ROUND SUPPORT BOX WITH
ROUND TRIM COLLAR
Figure 4 Figure 5
7
SQUARE CEILING
SUPPORT BOX WITH
TRIM FRAME
IN PLACE
WOOD SCREWS ARE
REQUIRED
ROUND CEILING
SUPPORT WITH TRIM
IN PLACE
MIN OF 2
INCHES
BELOW
FINISHED
CEILING
WOOD SCREWS ARE
REQUIRED
Figure 6
CAP
STORM
COLLAR
2 INCH MIN
CLEARANCE
TO INSIDE OF
ENCLOSURE
FRAMED
ENCLOSURE
MIN OF 3
INCHES BELOW
FINISHEDCEILING
18 INCH MIN FOR
SINGLE WALL
STOVEPIPE
ADJUSTABLE
FLASHING
CHIMNEY
SECTION
ATTIC
INSULATION
SHIELD
FIRESTOP
RADIATION
SHIELD
CHIMNEY
SECTION
Figure 7
Support, refer to the Square ceiling installation
below. The Round Ceiling Support Box has
the option of a square or round Trim Collar
available (Fig 5). The bottom of the Round
Support Box must extend at least 3 inches
below the nished ceiling. Level the Support
Box and secure it to the framing using at least
three 8-penny nails per side (min. of 12 total).
Alternatively, you may use 1-1/2” #8 wood
screws (min. of 12 total), instead of nails.
Next, secure the Trim Collar (round or square)
to the framing members using the (4) 1” long,
round-head wood screws provided (Fig 6).
For installation into a cathedral ceiling, you
must use the Square Ceiling Support Box or
Reduced Clearance Support Box (or the CAS
Ceiling Support if installing the CAS system)
and the two-piece Trim. The bottom of the
square portion of the Support Box must be a
minimum of 2-inches lower (round portion is
an additional 3 inches lower) than the nished
ceiling at the lowest side of the penetration
(Fig 5 & 6). Level the Support Box and
secure it to the framing using at least three (3)
8-penny nails per side (minimum of 12 nails
total), or a minimum of (3) #8, 1-1/2” wood
screws. Adjust the overlapping “U-shaped”
Trim pieces so they cover the Support Box,
and secure them to the framing members
using the (6) 1-1/4” long, round head wood
screws provided (see Fig 6).
4. Frame Openings: Frame openings in
each ceiling or oor above the Support Box
(Fig 7). These openings are to hold the
Firestop Radiation Shield and Attic Insulation
Shield. Locate each opening by dropping a
plumb bob to the four corners of the opening
below. Maintain the framing dimensions as
specied in Table 2.
Warning: other than the framing for the
Reduced Clearance Support Box, any
combustible materials around the chimney
must still meet the minimum 2” clearance
requirement. If Elbows must be used to
avoid an obstruction, refer to the Offset Elbow
Installation section.
5. Cut Roof Opening: Cut an opening in the
roof directly above the opening below, and
at least 4 inches larger than the chimney’s
outside diameter to provide at least a
2-inch clearance all around the chimney.
The chimney must be centered within this
8
Framing Dimensions
Chimney Diameter
5” 6” 7” 8”
CATHEDR AL CEILIN G
SUPPO RT BOX
FLAT CEIL ING
SUPPO RT BOX
ROUND CEILING
SUPPO RT BOX
FIRES TOP RADIATION
SHIEL D
WALL THIMB LE 111/4” 121/4” 131/4” 141/4”
CAS C EILING
SUPPO RT
CAS WALL THI MBLE NA 121/4” NA 141/4”
REDUC ED
CLEAR ANCE
SUPPO RT BOX
111/4” 121/4” 131/4” 141/2”
111/4” 121/4” 131/4” 141/2”
111/4” 121/4” 131/4” 141/4”
111/4” 121/4” 131/4” 141/4”
NA 121/4” NA 141/2”
NA 101/4” NA NA
Table 2
FRAMING
FIRESTOP
RADIATION SHIELD
Figure 8
opening and maintain the 2-inch clearance to
combustibles.
6. Install Firestop Radiation Shield: A
Firestop Radiation Shield is required in
multistory installations at each oor penetration
TWIST CLOCKWISE
TO TIGHTEN
Figure 9
ATTIC INSULATION
SHIELD
Figure 10
above that where the Support Box is located.
Example: in a multistory home where the
appliance is on the ground oor (Support
Box is in the 1st oor ceiling), you would
need a Firestop Radiation Shield at the 2nd
oor ceiling, and at the 3rd oor ceiling, etc.,
including where the chimney penetrates into
the attic. Figure 7 shows a typical 2-story
installation with an attic.
Note: a Firestop Radiation Shield is not
installed where the chimney penetrates
through the roof. The Firestop Radiation
Shield is installed on the underside of the
ceiling/oor framing, with the cylindrical
“tube” portion of the shield pointing
upward. (Fig 8). Use a minimum of either
(1) 8 penny nail or (1) #8, 1-1/2” wood screws
per corner. Refer to Table 2 for framing
requirements.
9
Figure 11
ROOFING
FASTENERS
ADJUSTABLE
FLASHING
Figure 12
PUSH COLLAR
DOWN TO
FLASHING AND
SEAL WITH NONHARDENING HIGHTEMP SILICONE
SEALANT
Figure 13
7. Assemble Chimney Sections: Lower
the female end of the rst Chimney Section
in the Support Box (Fig 9). It will twist-lock
clockwise onto the male end of the Support
Box. Turn Pipe Sections rmly clockwise to
lock them together. Sheet metal screws are
not required, but they may be used to reinforce
the connection, if desired. Use only 1/2” (or
shorter) sheet metal screws. Do not penetrate
the inner liner of the chimney.
8. Install Attic Insulation Shield: The
Attic Insulation Shield is required where the
chimney passes into an attic. Its purpose is
to prevent debris and insulation from getting
too close to the chimney (Fig 10). An installed
Attic Insulation Shield is 15 inches high. In
attic areas where this shield cannot t, you
must enclose the attic portion of the chimney
in a framed enclosure. If the chimney is fully
enclosed through the attic, an Attic Insulation
Shield is not required. If the chimney passes
into the attic, install the Attic Insulation Shield
as follows:
a. If the Firestop Radiation Shield extends
above the attic oor, no modications are
necessary. The Firestop Radiation Shield will
t inside the Attic Insulation Shield.
b. Assemble Chimney Sections until at least
18 inches of chimney extends above the
Firestop Radiation Shield.
c. Extend the Firestop Radiation Shield tube
extension (keep at least 1” overlap), and
secure in place using sheet metal screws.
d. Slip the Attic Insulation Shield over the
Chimney and Firestop Radiation Shield until
the base sits squarely on the framed opening
(Fig 7 & 10).
e. Secure the Attic Insulation Shield to the
top of the framed opening using at least (3)
8-penny nails or (3) #8, 1-1/2” wood screws
per side (Fig 10).
f. Wrap the Collar of the Attic Insulation Shield
around the chimney and fasten it loosely. Slide
the Collar down to meet the Attic Insulation
Shield. Slip the tab through the adjacent slot
and fold it back to tighten and secure the
Collar (Fig 11).
9. Attach Flashing: In new construction,
assemble the Chimney Sections to a point
above the roof, then slip the Flashing over
the chimney. On an existing roof, center
and install the Flashing before extending the
10
chimney above the roof. Allow space to permit
sliding the next Chimney Section up through
the Flashing. Always insure the chimney
remains vertical (use a level), and that at least
a 2-inch clearance to combustible materials is
maintained all around. Install the upper edge
of the Flashing under the roong. Nail to the
roof along the upper edge and down each side
with 1-inch roong nails. Do not nail the lower
edge of the Flashing (Fig 12). Seal top and
upper sides of ashing with roong compound
or sealant. Be sure to follow local building
practices, as needed. Seal all nail heads with
a non-hardening waterproof sealant. On at
or tarred and graveled roofs, nail and seal the
Flat Roof Flashing to the roof on all sides with
roong compound. Do not put screws through
the Flashing into the Chimney Pipe.
10. Finish Top: Apply a high-temperature
(500ºF), non-hardening waterproof sealant
around the chimney at the point where the
Storm Collar will meet the chimney just above
the Flashing. (Figures 12 and 13). Slide the
Storm Collar down over the chimney to the top
of the Flashing. Tighten and seal the Storm
Collar against the sealant. After installing
sufcient Chimney Sections to meet the height
requirement (Fig 1), attach the Chimney Cap
onto the top of the chimney by holding the
collar of the cap and twist locking it clockwise
onto the chimney. Do not hold upper portion
of the cap and twist, as this may damage the
cap. The Chimney Cap can be removed for
chimney cleaning as described in the Chimney
Maintenance section of the instructions. Use
an Extended Roof Bracket if the chimney
extends more than 5 feet above the roof.
(Figures 16 & 17 in the Extended Roof
Bracket section). If you are located in heavy
snow country, it is recommended that a Snow
Splitter be installed. The Snow Splitter can be
purchased from DuraVent or fabricated locally
SPLITTER
SPLITTER
TOP VIEW
Figure 14
from heavy gauge sheet metal (Fig 14). This
will protect the chimney by routing the snow
around it.
11. Enclosures: Enclose chimneys where
they pass through occupied spaces, including
closets. Always maintain at least a 2 inch
clearance between the chimney and any
combustible materials. Interior enclosures
may be constructed with standard framing and
sheathed with sheetrock or plywood. Use Wall
Straps as needed to maintain a minimum of 2
inches of air space between the chimney and
combustible materials.
OFFSET ELBOW INSTALLATION
Elbows are manufactured in 15° and 30°
angles measured from the vertical. A 30°
Elbow is the largest that can be used in an
offset. A 30° Elbow may not be combined
with a 15° Elbow to make a 45° offset. Avoid
Elbows if possible, since a totally vertical
chimney is more efcient. When Elbows
are necessary to avoid obstructions such as
rafters, ridgepoles, or joists, use no more than
11
ELBOW STRAP
CHIMNEY
SECTION
ELBOW
RISE
(INCHES)
Strap, Tee Support, or similar support method
to support the weight of the pipe and to relieve
stress on the Elbows. Attach the second Elbow
above the Chimney Section to complete the
offset (Fig 15).
2. Secure Offset: Place the Elbow Strap’s
band around the angled portion of the top
Elbow, then tighten the nut and bolt until the
clamp is rm. Wrap the Elbow Strap end over
an adjacent joist or rafter and secure it with at
OFFSET
(INCHES)
ADDITIONAL ELBOW
ELBOW STRAP
STRAPS REQUIRED
FOR EACH CHIMNEY
SECTION USED IN
OFFSET
ELBOW STRAPS
OR TEE SUPPORTS
ARE REQUIRED TO
SUPPORT WEIGHT
OF OFFSET AND
TO RELIEVE
STRESS ON
ELBOWS
ELBOW
TWO OR MORE
CHIMNEY
SECTIONS
Figure 15
2 pairs of Elbows in any one chimney system.
1. Attach Elbows: Attach Elbow to Chimney
Section or other Elbow by twisting clockwise
until they lock rmly. Attach one Elbow to the
Chimney Section below, and align it for the
offset. Elbows for DuraTech have a swivel
feature that allow for 360º rotation at their base
for ease of installation. Refer to Table 3 to
determine the required offset length and attach
an appropriate length (or lengths) of Chimney
Section(s) above the Elbow. Important:
For each chimney pipe section in the offset
(between the elbows), there must be an Elbow
Elbow
Angle
from
Vertical
15” 0” 2” 16 ½”
15” 6” 3 ¼” 21 ¼”
15” 12” 4 ¾” 27
15” 18” 6 ¼” 32 ¾”
15” 24” 8” 38 ½”
15” 36” 11” 50 ¼”
15” 48” 14 ¼” 61 ¾”
15” 48” + 6” 15 ½” 66 ½”
15” 48” + 12” 17” 72 ¼”
15” 48” + 18” 18 ½” 78:
15” 48” + 24” 20” 83 ¾”
30” 0” 4” 15 ¾”
30” 6” 6 ¼”
30” 12” 9 ¼” 25 ¼”
30” 18” 12 ¼” 30 ¼”
30” 24” 15 ¼” 35 ½”
30” 36” 21 ¼” 46”
30” 48” 27 ¼” 56 ¼”
30” 48” + 6” 29 ¾” 60 ½”
30” 48” + 12” 32 ¾” 65 ¾”
30” 48” + 18” 35 ¾” 71”
30” 48” + 24” 38 ¾” 76”
Chimney
Length
Between
Elbows
Offset
Inches
Table 3
Rise
Inches
12
least (2) 8-penny nails or (2) #8, 1-1/2 screws.
Do not add more Chimney Sections until
the Elbows are supported. Be sure that the
chimney remains vertical. If there is more than
one Chimney Section between the Elbows,
install a second Elbow Strap around the joint of
the two Chimney Sections (Fig 15).
EXTENDED ROOF BRACKET
INSTALLATION
If the chimney extends more than 5 feet
above the rooine, an Extended Roof Bracket
must be installed at every 5-foot increment
of chimney height above the rooine, leaving
no more than 5 feet of chimney extending
above the last pipe bracket. The Extended
Roof Bracket consists of the Pipe Band, the
Adjustable Legs, and the Roof Brackets.
1. Mount Pipe Band: Slip the Pipe Band
around the chimney and secure by tightening
the nut and bolt.
2. Attach the Legs: The Adjustable Legs
of the assembly will adjust from 67” to 114”.
Secure one end of each Leg to the Pipe Band
using the nuts and bolts included (2 per Leg).
Position the Adjustable legs so they form
approximately a 60° angle with the chimney,
and with each other (Figures 16 and 17). Be
sure that there is at least 3” of overlap between
the top and bottom halves of the Adjustable
Leg. In order to secure Legs in proper
position, there is a hole provided in the outer
leg where the outer and inner halves overlap.
Use a 1/4” drill bit to drill through the inner leg
at that location. Use the nut & bolt provided to
pin the Adjustable Legs in position.
3. Install Roof Brackets: Mount the two
Roof Brackets where each of the Adjustable
Legs meets the roof, using (4) 1” roong nails
or screws per bracket. Seal the nail heads
carefully with a non-hardening, waterproof
sealant. Attach the bottom end of the
EXTENDED ROOF
PIPE BAND
AROUND
CHIMNEY
SECTION
BRACKET ASSEMBLY
ADJUSTABLE
LEGS ADJUST
FROM 67 TO
114 INCHES
Figure 16
CHIMNEY CAP
EXTENDED ROOF
MUST USE EXT.
ROOF BRACKET IF
OVER 5 FT
BRACKET
ADJUSTABLE LEGS
Figure 17
Adjustable Legs to the Roof Brackets using the
nuts & bolts provided.
ROOF SUPPORTED
INSTALLATIONS
There are two types of Roof Supported
Installations: (1) Using a Square Ceiling
Support Box, Reduced Clearance Support
Box, or CAS Ceiling Support; and (2) Using a
Roof Support.
(1) For a Square Ceiling Support Box,
Reduced Clearance Support Box, or CAS
Ceiling Support installation, make sure that
the square box portion of the Support Box can
extend at least 2” below the low side of the
nished ceiling (Fig 19). If the CAS Ceiling
Support is used, refer to the DuraTech CAS
13
SQUARE PORTION
OF SUPPORT BOX
NEEDS A MIN OF 2
INCHES CLEARANCE TO
FINISHED CEILING
CAP ADJUSTABLE
STORM
COLLAR
FLASHING
CHIMNEY
SECTION
18 INCH MIN CLEARANCE
FOR SINGLE-WALL
STOVEPIPE
Figure 18
CHIMNEY
SECTION
CHIMNEY
SECTION
Figure 19
SQUARE
CEILING
SUPPORT BOX
OR REDUCED
CLEARANCE
SUPPORT BOX
CAP
STORM
COLLAR
CHIMNEY
SECTION
FRAMED
OPENING
ADJUSTABLE
FLASHING
CHIMNEY
SECTION
CHIMNEY
SECTION
SQUARE
CEILING
SUPPORT BOX
OR REDUCED
CLEARANCE
SUPPORT BOX
Installation Instructions for directions on how
to install the remainder of the Combustible Air
System. The Support Box must remain level,
and the top edge of the box must cover the
edge of the roof’s decking material. Square
Ceiling Support Boxes are available in 11-inch,
24-inch, and 36-inch heights. The Reduced
Clearance Support Box is available in 24”
length for 6” diameter chimney only. Mobile
14
home chimney installations are roof supported.
Do not seal openings in ashing.
1. Place Appliance: Place the appliance in its
proper location, referring to the manufacturer’s
instructions as to allowable distances from
combustibles, etc.
2. Cut Openings: Cut a roof opening in your
desired location, just as in a Ceiling-Supported
Installation (Steps 1 through 5). If a separate
ceiling and roof exists, as shown in Figure
18 (Low Attic), rst cut and frame a ceiling
opening as described in Ceiling-Supported
Installations (Step 2). Refer to Table 2 for
clearance and framing specications. If it is
desired to install through a cathedral ceiling
(Fig 19), then the hole is cut in the roof.
3. Install Support Box: Slip the Square
Support Box, Reduced Clearance Support
Box, or the CAS Ceiling Support into the
framed opening so the square portion projects
at least 2 inches below the nished ceiling and
rafters (bottom of round portion is 5” below),
and extends above the ceiling to framing or
decking materials to which it can be nailed.
Level the Support Box, and slit the corners
to the rooine where they extend beyond it.
Bend the aps (created by the slitting) ush
with the roof, and nail the Support Box to the
roof or framing with at least three (3) 8-penny
nails, or (3) 1-1/2”, #8 screws, per side (Fig
20). Be sure to keep the Support Box level.
Screw the trim sections into the ceiling (Fig 6).
4. Complete Installation: Refer to Steps 7,
9 & 10 in the Ceiling Supported Installation
section to complete the Roof Supported
installation.
Figure 20
(2) A Roof Support is also used in installations
where there is a cathedral ceiling, and a
Square Ceiling Support is not desired. The
Roof Support allows the DuraTech chimney
to come down into the room below the level
of the ceiling (Fig 21). The Roof Support can
support a maximum of 45 feet of DuraTech
Chimney total, and maximum of 20 feet below
the support. If a taller stack of DuraTech
Chimney is required, you must use a Square
Ceiling Support Box instead.
1. Cut and frame opening to provide a
minimum 2” clearance on all sides of the
chimney pipe. Note: Opening in nished
ceiling should be circular/oval in order for it to
be covered by Trim Collar.
2. Bolt on the Roof Support Brackets to
the Roof Support Band using the supplied
DURABLACK
SLIP CONNECTOR
ROOF SUPPORT
TRIM COLLAR
FINISHING COLLAR
ROOF SUPPORT
(SUPPORT
BRACKETS AND
BAND)
SECURE ROOF
SUPPORT BAND TO
CHIMNEY USING
4 SHEET METAL
SCREWS
Figure 21
USE 4 NAILS (OR
SCREWS) ON
EACH SIDE OF
SUPPORT
TIGHTEN BOLT
ON ROOF
SUPPORT BAND.
15
DURATECH CHIMNEY
PIPE
FLOORING
MIN OF 3” BELOW
CEILING OR
EXPOSED FRAMING
ROOF SUPPORT
FRAMING
MEMBERS
(ALL SIDES)
FIRESTOP
RADIATION SHIELD
(TRIM RADIATION
SHIELD IF NEEDED
TO AVOID ROOF
SUPPORT)
Figure 22
hardware. Attach the Roof Support Brackets
to roof using (4) 8 penny nails or (4) #8, 1-1/2”
screws per side (Fig 21).
3. Determine how much DuraTech Chimney
will be extending into the room (minimum of
3” below the ceiling). Be sure to maintain the
proper clearance to combustibles (walls and
ceilings) for the connector pipe. Once you have
identied the proper height for your installation,
attach the of the Roof Support Band to the
Chimney Section by tightening the Bolt, and
secure it by using (4) supplied sheet metal
screws.
4. Attach desired length of Chimney Sections
above and below the roof level (max. of 45’
total, 20’ below the support). To transition to the
Connector Pipe, attach the Finishing Collar by
twist locking it to the bottom section of DuraTech
Chimney.
5. Slide Trim Collar over the DuraTech Chimney
and attach the Trim Collar to the ceiling using
(4) 1-1/4” screws provided (Fig 21).
6. Refer to Steps 10 & 11 in the Ceiling
Supported Installation section to complete the
Roof Supported installation.
Alternative Installation Location for Roof
Support: The Roof Support may be used at the
bottom of a Chimney installation (Fig 22). This
may be useful for some basement installations.
Maintain a minimum of 2” clearance to
combustibles at all times. The DuraTech
Chimney needs to extend a minimum of 3”
below the nished ceiling or exposed framing
members. Please note that you cannot extend
the chimney all the way to the appliance - you
must have some connector pipe.
1. Cut and frame opening to provide a minimum
of 2” clearance on all sides of the chimney.
Be sure to maintain the proper clearance to
combustibles for the connector pipe.
2. Bolt on the Roof Support Brackets to
the Roof Support Band using the supplied
hardware. Attach the Roof Support Brackets
to oor using (4) 8 penny nails or (4) #8, 1-1/2”
screws per side (Fig 22).
3. Determine how much DuraTech Chimney
will be extending into the room (minimum of
3” below the framing), and attach the of the
Roof Support Band to the Chimney Section by
tightening the Bolt, and secure it by using (4)
supplied sheet metal screws (Fig 21 & 22).
4. Install a Firestop Radiation Shield below the
nished ceiling or framing members. Trim the
‘tube’ portion of the Firestop Radiation Shield
as needed if it interferes with the Roof Support
Installation.
5. Follow steps 4, 5 & 6 for the Roof Support.
TEE-SUPPORTED INSTALLATIONS
Tee-Supported installations are used when
passing through a wall to an outside chimney.
The Tee Support can hold a maximum of
50-feet of DuraTech Chimney without the Tee
Support Straps, or70-feet with use of Tee
Support Straps. The Tee Support and Wall
Straps are adjustable, allowing from 2” - 6” of
clearance between the chimney and the wall,
16
as needed to t your installation. There are
two options when installing a Tee-Supported
installation: the Tee Support above the Tee, or
the Tee Support below the Tee. The required
parts and general conguration are as shown
in Figures 23, 24, 25 and 26.
1. Place Appliance: Position the appliance
according to the manufacturer’s instructions. It
is a good idea to try to position the appliance
so it will allow the chimney to line up centered
between studs.
2. Locate, Cut & Frame Opening:
Determine
the location where the chimney will pass through
the wall. The chimney should pass through
the wall, centered between two studs. The
height of the penetration can be determined
by positioning sections of stove pipe until you
have the desired conguration (refer to the
appliance manufacturer’s installation instructions
for restrictions on stove pipe). Cut and frame
an opening in the inner and outer walls at this
location. Refer to Table 2 for the appropriate
framing dimensions.
3. Install Wall Thimble: The Wall Thimble
is two-piece component which includes the
Interior half and the Exterior half. On the
outside wall, install the back portion of the Wall
Thimble. Center the back portion of the Wall
Thimble (with shield inside wall) in the framed
opening of the outside wall. Be sure to seal
the ange of the Wall Thimble around the wall
by using a non-hardening waterproof sealant.
Attach the back portion of the Wall Thimble to
the outside wall using at least (4) 8-penny nails
or (4) #8, 1-1/2” wood screws. There must be
MIN 6 INCHES
CLEARANCE
BETWEEN CAP AND
CHASE TOP
CHASE TOP
FLASHING
FRAMED EXTERIOR
ENCLOSURE
TYPICAL THRUTHE-WALL TEE
SUPPORTED
INSTALLATION
ACCESS DOOR
FOR CLEANING
Figure 23
CHIMNEY SECTION
OF 6 INCHES INTO ROOM)
WALL THIMBLE
ASSEMBLY
TEE BRANCH (MUST
PENETRATE A MINIMUM
FINISHING COLLAR
CHIMNEY TEE
USE 8 PENNY NAILS OR #8, 2 1/2” WOOD
SCREWS. USE 4 FOR EACH SUPPORT
LEG.
TEE SUPPORT IS ADJUSTABLE TO
ALLOW FROM 2” - 6” CLEARANCE FROM
CHIMNEY TO WALL.
TEE CAP
Figure 24
17
WALL THIMBLE
COVER PLATE
FINISHING
COLLAR
TEE BRANCH
(MUST EXTEND AT
LEAST 6 INCHES
INTO ROOM)
Figure 25
CHIMNEY TEE
BACK OF WALL THIMBLE
(SECURE WITH 4 NAILS
OR 4 SCREWS)
TEE SUPPORT MAY BE
INSTALLATION WITH TEE
BELOW TEE SUPPORT
(SHOWN WITH LEG
BRACKETS MOUNTED
ABOVE SUPPORT
PLATE)
TEE SUPPORT WITH
LEG BRACKETS
MOUNTED ABOVE
SUPPORT PLATE CAN
SUPPORT A MAXIMUM
OF 50-FEET OF
CHIMNEY.
INSTALLED WITH LEG BRACKETS
ABOVE OR BELOW SUPPORT
PLATE AS SHOWN
8-PENNY NAILS OR #8, 2 1/2”
WOOD SCREWS, 4 PER SIDE
a continuous shield within the wall. If the two
halves of the Wall Thimble do not overlap, a eldfabricated extension constructed out of 26-gauge
galvanized or stainless steel is needed.
4. Install Tee Support: Install the Tee Support
on the outside wall. Position Tee Support so
that the chimney Tee will be centered inside
the Wall Thimble (Figs 24, 25, & 26). The Tee
Support may be installed either above the Tee or
below the Tee (within one pipe section), as seen
ADJUSTABLE WALL STRAP,
ALLOWS 2”-6” CLEARANCE
TO WALL
8-PENNY NAILS OR #8,
2 1/2” WOOD SCREWS,
2 PER SIDE
ADJUSTABLE TEE
SUPPORT ALLOWS 2”-6”
CLEARANCE TO WALL
CLEANOUT CAP
Figure 26
in Figure 26. The Tee Support can support up
to 50-feet of chimney by itself, or up to 70-feet
of chimney if the Tee Support Straps are used
(Fig 24, 26). Important: Verify that Tee Support
is level, and secure the leg brackets of the Tee
Support to the wall using (4) #8, 2-1/2” screws for
each side. Slide support base over leg brackets
to adjust for desired clearance to wall, and secure
by tightening bolts. (Figs 26 & 27).
5. Install Tee and Cleanout Chimney
INSTALLATION
WITH TEE BELOW
TEE SUPPORT
(SHOWN WITH
LEG BRACKETS
MOUNTED BELOW
SUPPORT PLATE)
USE (4) 1/2”
SHEET METAL
SCREWS TO
SECURE BAND
AROUND
CHIMNEY
USE 1/2”
SHEET METAL
SCREWS TO
SECURE BAND
TO SUPPORT
BASE
18
Section: Twist lock the Tee onto a desired
length of Chimney to be used as the cleanout
section. Use only one chimney section (any
length) to attach to bottom of the Tee. Tighten
support band around chimney section at
proper height to insure that Tee is centered
through Wall Thimble (Fig 25 & 26). Use the
1/2” sheet metal screws provided to insure
a tight connection between support band
and chimney section. Connect support band
to support base using the 1/2” sheet metal
screws provided (Fig 26). Twist lock Tee Cap
into bottom of Chimney Cleanout section.
6. Install Branch onto Tee: From inside
the house, attach the Chimney Branch up
to 24” chimney section, depending on wall
thickness, positioned horizontally used to pass
through the wall) to the Tee by twist locking it
clockwise. Important: The Chimney section
used to penetrate through the wall must extend
at least 6” into the room (Fig 25 & 27). Use
high-temperature sealant (500ºF) to seal
between the Wall Thimble and the Chimney on
the outer wall.
7. Install Cover Plate and Finishing Collar:
After the Chimney Branch is secured in place
(penetrating at least 6” into the room), slide
the Cover Plate over the Branch and attach
it to the framing using (4) 1-1/4” long, round
head wood screws. Be sure that the Branch
is centered in the opening of the Cover Plate.
Twist lock the Finishing Collar on to the
female end of the Chimney Branch by twisting
clockwise.
8. Complete Chimney: Attach the Chimney
Sections as in Step 7 in the Ceiling Supported
Installation section. Secure the chimney to
the wall with Wall Straps at a minimum of
8-foot intervals and maintain at least 2 inches
of clearance to combustible materials. The
Wall Straps are adjustable to allow from 2”- 6”
EXTENDED ROOF
SUPPORT BRACKET
ADJUSTABLE WALL
STRAP
2 INCHES MIN
6 INCHES MIN
INTO ROOM
ADJUSTABLE
FLASHING
2 INCHES MIN
FRAMED CHASE
ADJUSTABLE TEE
SUPPORT
ACCESS DOOR
FOR CLEANING
Figure 27
clearance to combustibles. Slip the Wall Straps
around the chimney, tighten the bolts, adjust
the clearance, and fasten the Wall Straps to
the wall with (4) #8, 1-1/2” long wood screws.
Once the chimney is at the minimum height
specied in Figure 1, attach the Chimney Cap
onto the top of the chimney by holding it by
the collar and twist locking it clockwise onto
the Chimney Pipe. If the chimney penetrates
an overhang, frame for at least 2 inches of
clearance, and install Flashing and Storm
Collar as described in Steps 9 & 10 for Ceiling
Supported Installations. Another option is to
cut away the overhang for a 2-inch clearance
(Fig 28). If the chimney extends more than 5
feet above the top Wall Strap or Flashing, use an
Extended Roof Support Bracket.
9. Install Chase Top Flashing: It is
recommended that a Tee Supported Chimney be
enclosed in a chase. If a chase enclosure has
been constructed, you can either use a standard
at-roof ashing, or you can use a Chase Top
19
2 INCHES MIN
ALLOW MIN OF 2 INCHES
AIR SPACE ON ALL SIDES
2 INCHES MIN
Figure 28
ALLOW 1 INCH AIR
GAP BETWEEN STORM
COLLAR AND CHASE TOP
FLASHING
1/2 INCH AIR SPACE
ESTABLISHED BY
SPACERS
Flashing. Using a Chase Top Flashing allows
for a lower prole for the chimney. The Chase
Top Flashing has an opening that is 3” larger
in diameter than the DuraTech Chimney. If the
Chase Top Flashing can t over your chase
enclosure as required (Fig 29) then install as
directed, or trim as needed. However, if the
Chase Top Flashing is smaller than your chase
enclosure, you will need to provide a galvanized
sheet capable of covering your chase and
overhanging the sides by 1/2 - 3/4 inch. Attach
the Chase Top Flashing to the galvanized sheet
using appropriate sheet metal screws and nonhardening waterproof sealant. Use the Chase
Top Flashing Spacers to allow the proper air-gap
clearances on the galvanized sheet. The Chase
Top Flashing Spacers are available to insure
that the proper air-gap is maintained. Figure 29
displays in some detail, how these air gaps are
established using the Spacers and Chase Top
Flashing. Secure the Chase Top Flashing to the
chase using a sufcient number of #8, 1-1/2”
wood screws, being careful to insure the air
CHIMNEY CAP
STORM COLLAR
6 INCH MIN CLEARANCE
BETWEEN BOTTOM OF
CAP AND CHASE TOP
FLASHING
20
1/4 INCH
AIR
SPACE
CHIMNEY
SECTIONS
FRAMED CHASE
ENCLOSURE
Figure 29
CHASE TOP
FLASHING
SPACER
1/2 INCH
1/4 INCH
gap is maintained between the ashing and the
T
W
H
and 30” high, and the chimney height as 20’.
12” diameter pipe.
Dotted line represents sample problem.
CHIMNEY SIZING CHART
FOR FIREPLACE INSTALLATIONS
T
W
H
T
8
7
6
30
16
14
20
8
10
15
12
10
50
40
30
24
48
60
36
42
72
HEIGHT
36
30
42
24
48
18
WIDTH
18
20
22
24
20
18
60
72
84
84
HEIGHT
(FEET)
CHIMNEY
FIREPLACE
OPENING (INCHES)
CHIMNEY
PIPE
DIAMETER
(INCHES)
chase. Seal the screw heads with non-hardening
sealant. When installing the Storm Collar, allow
a 1” air space between the bottom of the Storm
Collar and the Chase Top Flashing .
MASONRY FIREPLACE
INSTALLATIONS
1. Determine Chimney Size: Use Table 4 to
determine the correct diameter chimney for your
replace.
2. Mount Anchor Plate: Chimneys for masonry
replaces begin with an Anchor Plate. Make
sure the surface of the masonry chimney has
a level surface on which to attach the Anchor
Plate. If the top of the masonry does not have
a level surface, then you will need to modify the
masonry accordingly. Follow the requirements
of your local building department for connecting
factory-built chimneys to masonry reboxes or
masonry chimneys. Center the Anchor Plate
over the masonry ue opening, and seal the
Anchor Plate with a high-temperature (1000ºF)
sealant. Secure Anchor Plate with at least (4)
1/4” x 4” masonry anchors (Fig 30). It is very
important that the Anchor Plate is level. Be sure
to maintain a 1” min. clearance to combustibles
from the Anchor Plate.
3. Attach Chimney: Twist lock the rst
Chimney Section clockwise onto the Anchor
Plate.
4. Finish Chimney: Install the rest of the
chimney as directed in the Ceiling Supported
Installation section, Steps 4 through 10
Refer to Figure 1 and Table 4 for chimney
height requirements. Always maintain at least
2 inches of clearance to combustible materials,
and enclose the chimney where it passes
through occupied areas. Use a Wall Strap for
every eight (8) feet of chimney height.
Table 4
21
MAINTAIN 1 INCH MIN
CLEARANCE FROM ANCHOR
ANCHOR
PLATE
NOTE:
Follow local
building code
requirements
for connecting
factory-built
chimney to
masonry
replaces.
HIGH TEMP
SEALANT
PLATE TO COMBUSTIBLES
MASONRY
ANCHOR BOLTS (4)
REQUIRED
(NOT FURNISHED)
EXISTING
MASONRY
CHIMNEY
WITH LEVELED
SURFACE
Figure 30
CHIMNEY
SECTION
SHEET METAL
SCREWS
(4 REQUIRED)
ANCHOR
PLATE
Figure 31
ZERO-CLEARANCE FIREPLACE
INSTALLATIONS
1. Manufacturer’s Instructions: Carefully
read and comply with the manufacturer’s
installation instructions for your replace. Be
sure that DuraTech is approved for use with
your appliance.
2. Anchor Plate: Attach an Anchor Plate
to the replace top with (4) 5/8” sheet metal
screws (Fig 31). Check with the appliance
manufacture about the use of high temperature
sealants.
3. Chimney Sections: Attach a Chimney
Section to the Anchor Plate by twist-locking
clockwise.
4. Completion: Install the remainder of the
chimney as instructed for a standard CeilingSupported installation, (using a Firestop
Radiation Shield in the 1st oor ceiling instead
of the Support Box). Always maintain at least
2 inches of clearance to combustibles, and
enclose the chimney where it passes through
occupied areas.
CONNECTION FROM APPLIANCE
TO CHIMNEY SYSTEM
1. Single Wall Stovepipe: If single wall stovepipe
is desired, DuraVent’s “DuraBlack” single-wall
stovepipe is recommended. The connection
to the Ceiling Support Box, or Finishing Collar
is made with a DuraBlack Slip Connector or a
Snap-Lock Adapter. The beaded end of the Slip
Connector or Snap Lock Adapter slips into the
opening in the Ceiling Support or Finishing Collar.
Align the tabs on the Slip Connector or Snap
Lock Adapter with the notches in the face of the
Support Box or Finishing Collar, push it in and
rotate to lock it in place. Further instructions for
assembling DuraBlack Stovepipe are contained in
their shipping cartons. Remember, the minimum
clearance to combustibles for single wall stovepipe
is 18 inches.
2. Close Clearance Connector Pipe (DVL):
DuraVent manufactures a close clearance
connector pipe, also referred to as “DVL”. DVL
may be positioned as close as 6 inches to a
combustible wall, and as close as 8 inches to
a combustible ceiling, provided the appliance
installation instructions permit this distance. In
order to join this type of connector to the Support
Box or Finishing Collar, a DVL/DuraBlack Chimney
Adapter is required. The DVL/DuraBlack Chimney
Adapter slips into the opening in the Support Box
22
or Finishing Collar. Align the tabs on the DVL/
DuraBlack Chimney Adapter with the slots cut into
the face of the Support Box or Finishing Collar, and
push it in, and rotate to lock it in place. Detailed
instructions for assembling the remainder of the
close clearance system are included in the DVL
shipping cartons.
3. Connection to Oil-Burning Appliance: DVL
is especially recommended for oil appliances
because of the corrosive nature of oil-burning
exhaust. When connecting to an oil burning
appliance, refer to National Fire Protection
Association Standard #211. Table 6-5.1.1 in NFPA
211 states that you must allow for 18” clearance
to combustibles if you are using single wall vent
connector. If , however, your appliance is Type-L
Vent listed and you are using a listed Type-L Vent
connector, then you are permitted to use the
clearances as specied by the vent listing.
CHIMNEY MAINTENANCE
1. Creosote and Soot: When wood is burned
slowly, it produces tar and other organic vapors,
which combine with expelled moisture to produce
creosote. The creosote vapors condense in the
relatively cool chimney ue of a slow-burning re.
As a result, creosote residue accumulates on the
ue lining. When ignited, this creosote makes an
extremely hot re.
2. Access: Chimneys must be installed so that
access is provided for inspection and cleaning.
3. When to Clean: The chimney should be
inspected at least once every month during the
heating season to determine if creosote or soot has
built up. Check spark arrestor screens at least every
2 to 4 weeks. If creosote or soot has accumulated,
it should be cleaned or replaced to reduce the risk of
chimney re.
4. How to Clean: Have your chimney cleaned
by a Certied Chimney Sweep if you have doubts
about your ability to clean it. Use a plastic, wood, or
steel brush. Do not use a brush that will scratch the
stainless steel liner of your chimney. Scrub the spark
arrestor with a wire brush. To remove the Chimney
Cap for cleaning unscrew the four (4) screws that
attach the cap’s support legs to the cap base. The
Tee Cleanout Cap can be removed by turning
counter-clockwise. Be sure to replace Tee Cleanout
Cap when you are nished cleaning the chimney.
5. Coal: Warning: Coal with a high sulfur content can
lead to premature failure of the chimney. To reduce
corrosion in chimneys where coal is burned, clean
the chimney thoroughly within 48 hours of shutting
down the stove for the season. An annual inspection is
required due to the corrosive nature of the fuel.
6. Chemical Cleaners: Use chemical cleaners
only as a last resort, and use only those which
the manufacturer specically warrants as being
noncorrosive to the chimney liner. DuraVent will
assume no liability for damage resulting from the use
of chemical cleaners.
7. In Case of Fire: If a ue re occurs, close all
appliance air inlets, and call your Fire Department.
Do not use the chimney again, until it has been
inspected for possible damage.
8. Painting: As an option, you can coat all exterior
metal parts, with the exception of the Chimney
Cap, with high temperature, rust proof paint. Wash
the metal with a vinegar and water solution before
painting. Painting the chimney will help to increase
chimney life.
9. Creosote Formation: DuraVent assumes
no liability for any structural damage or roof
contamination as the result of creosote formation. It
is the owner’s responsibility to comply with inspection
and cleaning requirements as described in these
instructions, and those of the appliance manufacturer.
23
M&G DURAVENT LIMITED LIFETIME WARRANTY
M&G DuraVent, Inc. (“DuraVent”) provides this limited lifetime warranty for all of its products with the exception of Ventinox® (lifetime), and
PolyPro® (ten years). Subject to the limitations set for th below, DuraVent warrants that its products will be free from defects in material or
manufacturing, if properly installed, maintained and used. DuraVent products are fully warranted if installed only by a professional installer.
This Warranty is transferable from the original homeowner to the buyer of the home. This warranty does not cover normal wear and tear, smoke
damage or damage caused by chimney res, acts of God, or any product that was: (1) purchased other than from an authorized DuraVent
dealer, retailer or distributor; (2) modied or altered; (3) improperly serviced, inspected or cleaned; or (4) subject to negligence or any use not
in accordance with the installation instructions included with the product as determined by DuraVent. Installation instructions are available
online at www.duravent.com under Support/Literature and through our Customer Service Department 800-835-4429 or customerservice@
duravent.com. This limited lifetime warranty applies only to parts manufactured by DuraVent.
DuraVent provides the following warranties for its products: One Hundred Percent (100%) MSRP 15 years from the date of purchase, and Fifty
Percent (50%) thereafter, except for the following limitations on: all Termination Caps and DuraBlack® are warranted at One Hundred Percent
(100%) for ve years.
All warranty obligations of DuraVent shall be limited to repair or replacement of the defective product pursuant to the terms and conditions
applicable to each product line. These remedies shall constitute DuraVent’s sole obligation and sole remedy under this warranty. This warranty
provides no cash surrender value. The terms and conditions of this warranty may not be modied, altered or waived by any action, inaction or
representation, whether oral or in writing, except upon the express, written authority of an executive ocer of DuraVent.
Corn, bio-fuels, driftwood or other wood containing salt, preservative-treated lumber, plastic and household trash or garbage, or wood pellets
containing such materials must not be burned in the appliance or replace. In case of a chimney re, the chimney must be inspected and
approved by a certied Chimney Sweep before reuse. After each annual inspection, maintenance, and cleaning, the certied Chimney Sweep
must ll out and date the appropriate section of the warrant y card provided with the chimney liner.
LIMITATIONS ON INTERNET SALES: Notwithstanding any other terms or conditions of this Limited Lifetime Warranty, DuraVent provides no
warranty for the following specic products if such products are not installed by a qualied professional installer: DuraTech®, DuraPlus HTC®,
DuraChimney® II, PelletVent Pro®, DirectVent Pro®, FasNSeal®, FasNSeal® W2, FasNSeal® Flex, and PolyPro®, and M&G DuraVent’s relining
products including DuraLiner®, DuraFlex® (SW, Pro, 316, 304), and Ventinox®. For purposes of this warranty, a trained professional installer is
dened as one of the following: licensed contractors with prior chimney installation experience, CSIA Certied Chimney Sweeps, NFI Certied
Specialists, or WETT Cer tied Professionals.
DuraVent must be notied and given the opportunity to inspect defective product prior to replacement under the terms of this limited lifetime
warranty. All warranty claims must be submitted with proof of purchase. Labor and installation costs are not covered under this warranty. To
obtain warranty service contact: DuraVent Warranty Service, 877 Cotting Ct., Vacaville CA 95688, or call 800-835-4429.
WHERE LAWFUL, DURAVENT DISCLAIMS ALL OTHER WARRANTIES, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL DURAVENT BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL,
PUNITIVE OR SPECIAL DAMAGES OR DIRECT OR INDIRECT LOSS OF ANY KIND, INCLUDING BUT NOT LIMITED TO PROPERTY DAMAGE AND
PERSONAL INJURY. DURAVENT’S ENTIRE LIABILITY IS LIMITED TO THE PURCHASE PRICE OF THIS PRODUCT. SOME STATES DO NOT ALLOW
LIMITATIONS ON IMPLIED WARRANTIES, OR THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE
LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU. THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO
HAVE OTHER RIGHTS THAT VARY FROM STATE TO STATE.
For the most up-to-date installation instructions, see
www. duravent.com
REV 3.22.2012
Manufactured in Vacaville CA and Albany NY
Customer Service Support 800-835-4429 707-446-4740 FAX www.duravent.com
DuraTech is a registered trademark of the M&G DuraVent, Inc.
All rights reserved. Made in the USA. M&G DuraVent is a member of M&G Group. ©2012
L150 5/2012
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